P
US5789693AExpiredUtilityPatentIndex 90

Loudspeaker system for electronic piano

Assignee: KOEVERING COMPANY VANPriority: Jan 15, 1997Filed: Jan 15, 1997Granted: Aug 4, 1998
Est. expiryJan 15, 2017(expired)· nominal 20-yr term from priority
Inventors:LAWSON ROBERT D
Y10S84/01G10H 1/32Y10S84/17
90
PatentIndex Score
30
Cited by
6
References
1
Claims

Abstract

An electronic piano, comprises: a sound box having a configuration as in a stringed piano; an electronic keyboard carried by the sound box; an amplifying system; and, a control system for the electronic keyboard and the amplifying system. In a configuration corresponding to an upright piano, the sound box has first and second tweeters mounted through the top and directed upwardly, first and second mid-range speakers mounted through the rear wall and directed rearwardly, and first and second woofers directed angularly toward respective front-bottom corners of the sound box. The front wall has two openings through which sound reverberating inside the sound box is emitted. In a configuration corresponding to a grand piano, the sound box has first and second tweeters mounted on the bottom and directed upwardly, first and second mid-range speakers mounted through the bottom and directed downwardly, third and fourth mid-range speakers mounted on the bottom and directed upwardly, first and second woofers mounted through the bottom and directed downwardly, and third and fourth woofers mounted on the bottom and directed upwardly.

Claims

exact text as granted — not AI-modified
What is claimed is: 
     
       1. An electronic piano, comprising: a sound box having a configuration including a front wall, a rear wall facing opposite said front wall, left and right side walls, and a top and bottom;   an electronic keyboard carried by said sound box;   an amplifying system;   a contol system for said electronic keyboard and said amplifying system; and   a plurality of loudspeakers driven by said amplifying system and mounted in said sound box,   said loudspeakers including first and second tweeters mounted through the top of said sound box and directed upwardly, first and second mid-range speakers mounted through the rear wall of said sound box and directed downwardly, and first and second woofers directed angularly toward respective front-bottom corners of said sound box, and   said front wall having two openings through which sound reverberating inside said box is emitted.

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